entity framework Unable to load the specified metadata resource [duplicate]

Question

Possible Duplicate:
MetadataException: Unable to load the specified metadata resource

I hope someone can help with this. i have tried following other posts on here and dozens on other sites but i can get this working.

the entity framework was all working, then the next day just started giving me the error: Unable to load the specified metadata resource. on the constructor of the entities class.

I have checked the connection strings, deleted and re added everything but i still cant get this working.

my model namespace is WraithNath.co.uk.Models

the metadata artificat is embed in assembly

my connection strings are as follows:

<add name="ConnectionString" connectionString="Data Source=.\SQL2008;AttachDbFilename=|DataDirectory|\WraithNath.co.uk.mdf;Integrated Security=True;" providerName="System.Data.SqlClient" />
   <add name="Entities" connectionString="metadata=res://*/Models.WraithNath.co.uk.csdl|res://*/Models.WraithNath.co.uk.ssdl|res://*/Models.WraithNath.co.uk.msl;provider=System.Data.SqlClient;provider connection string=&quot;Data Source=.\SQL2008;AttachDbFilename=|DataDirectory|\WraithNath.co.uk.mdf;Integrated Security=True;MultipleActiveResultSets=True&quot;" providerName="System.Data.EntityClient" />

I cant find the 3 files i need in the assembly when looking at it in Reflector.

Is there a step by step guide to sort this out? i have already tried every link on the first 3 pages of google for search results 'entity framework Unable to load the specified metadata resource'.

Schober

When you open your EDMX model's properties what is your value in Metadata Artifact Processing property? – Nadabus

My problem was i had no Models. in front of my entity model. – Chaps

Answer 1

Craig Stuntz has written an extensive (in my opinion) blog post on troubleshooting this exact error message, I personally would start there.

The following res: (resource) references need to point to your model.

<add name="Entities" connectionString="metadata=
    res://*/Models.WraithNath.co.uk.csdl|
    res://*/Models.WraithNath.co.uk.ssdl|
    res://*/Models.WraithNath.co.uk.msl;

Make sure each one has the name of your .edmx file after the "*/", with the "edmx" changed to the extension for that res (.csdl, .ssdl, or .msl).

It also may help to specify the assembly rather than using "//*/".

Worst case, you can check everything (a bit slower but should always find the resource) by using

<add name="Entities" connectionString="metadata=
        res://*/;provider= <!-- ... -->

Jakoba

thanks, i cant believe i didnt find that site! – Schober

@Jakoba - I did look at this, but when you mentioned again I actually read it properly and it solved my problem – Webby

In my case I had just re-created the model using a different name, but with the same connection string. This was the exact solution I needed. – Yvonneyvonner

I dont understand this answer :( – Vezza

That site was the answer! In my case, I was looking at the wrong config file. Thanks for mentioning that site! – Stork